(a) What does the following 'C' code fragment do? char A; (b) What would be the value of A in HEX after execution of the code in (b)0) if A was initialized to FCH? Justify your answer (c) An embedded system is designed to communicate with an external device using a 16-bit port declared as variable port1. Write 'C' code to interact with the pins of port1 as follows: wait until both pins 0 and 15 go high toggle pins 0 and 15